Aon plc has named Bob Reville as casualty catastrophe market leader and restructured its UK and Ireland reinsurance team in a series of appointments.
Reville joins from Moody's and previously co-founded casualty modelling firm Praedicat, where he served as chief executive. He will report to Amanda Lyons, global product leader for reinsurance solutions, and takes up the role on July 15.
Reville's remit covers casualty catastrophe risk across product and environmental liability lines, with a focus on PFAS contamination, social inflation, and large-scale latent liability exposures. Reville said the aim is to build "a casualty catastrophe market for latent risk that can match the property catastrophe market, expanding coverage and opening new opportunities across the insurance and capital markets."
Lyons said his expertise in "extreme liability risk and advanced analytics" would help clients "better understand and respond to exposures driven by large-scale liability events."
Praedicat built its reputation on applying data science to casualty risk. The firm developed predictive models for mass tort and product liability exposures. The company's modelling approach drew on scientific literature to identify and quantify emerging liability risks before they became established legal exposures.
Aon also announced a restructuring of its Reinsurance UK and Ireland leadership team, with four appointments effective immediately.
Andrew Buckland takes the chief operating officer role, Charlie New heads business strategy, Andrew Larkin leads property, and Richard Evans heads longtail and structured solutions. All four report to Tom Murray, head of reinsurance for the UK and Ireland and co-leader of Aon's Global ReSpecialty.
Larkin retains his role leading the Australia and New Zealand team, which places treaty business from those territories into the London, European, and Bermudian markets. Evans will incorporate his existing role as head of structured solutions alongside the longtail portfolio, covering motor and liability lines. New's mandate covers growth initiatives, market positioning, and key change programmes for reinsurance across the UK and Ireland.
Murray said the leadership team would "continue to focus on helping our clients navigate volatility, build resilience, and make better decisions that protect and grow their businesses." Andrew Laing, chief executive of reinsurance for the UK and chairman of global facultative, said the restructuring strengthens the team's ability to focus on growth and client delivery.
Reville described the casualty catastrophe market for latent risk as less developed than the property catastrophe market, with his mandate centred on closing that gap. Demand for more structured reinsurance solutions in casualty lines has been driven by liabilities linked to PFAS contamination, social inflation, and mass tort exposures. The casualty catastrophe segment has attracted growing interest from capital markets as investors seek non-correlating, long-tail risk diversification.
Aon's UK reinsurance operation is one of the larger London market presences, serving cedents placing business through Lloyd's and company markets. The appointments come as the broader reinsurance market moves through a softening cycle, with property catastrophe pricing declining at mid-year 2026 renewals. Casualty lines have presented a different profile, with social inflation and large-scale environmental liabilities keeping loss trends elevated across several classes.
